How many of your Facebook friends are actually friends, and how many are just acquaintances? According to a study that was published in the Royal Society Open Science journal last Wednesday, only one in ten of your Facebook friends qualify as actual friends, and only one in thirty qualify as good friends. This is based on data from nearly 3,400 Facebook users between the ages of 18 and 65, which found that the average user has roughly 150 people on their friends list.